The original is an excellent example of an early keyed flute which can be seen in the Bate collection. Made of ebony, it has 7 silver keys including a "Quantz" D# key, enabling performance of the more advanced classical and early romantic music. The original is pitched around a’=427Hz and copies are available at 430Hz and 440Hz, as are extra middle joints for change of pitch. It also has a screw adjustable headjoint cork and a footjoint tuning slide.

A headjoint tuning slide can be provided as an optional extra. Other options are boxwood or keys of nickel silver.